"Blue-green" mealybugs are a group of related
mealybug
Mealybugs are insects in the family (biology), family Pseudococcidae, unarmored scale insects found in moist, warm habitats. Many species are considered pest (animal), pests as they feed on plant juices of greenhouse plants, house plants and sub ...
genera whose insides, during adulthood, are usually of the color which gives them their collective name. Alternately, this group may be referred to as blue-black mealybugs. It includes the genera
Amonostherium,
Australicoccus,
Melanococus, and
Nipaecoccus.
While the exact relationships between various scale insects are often contested, one suggestion is to class all (and only) the blue-green mealybugs in the sub-family
Trabutininae.
References
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Agricultural pest insects
Insect common names
Insect pests of ornamental plants
Insect vectors of plant pathogens
Pseudococcidae
{{Coccoidea-stub